1 files changed, 392 insertions, 0 deletions
diff --git a/src/Ryujinx.Audio/Input/AudioInputSystem.cs b/src/Ryujinx.Audio/Input/AudioInputSystem.cs
new file mode 100644
index 00000000..b3ca0fd6
--- /dev/null
+++ b/src/Ryujinx.Audio/Input/AudioInputSystem.cs
@@ -0,0 +1,392 @@
+using Ryujinx.Audio.Common;
+using Ryujinx.Audio.Integration;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Audio.Input
+{
+    /// <summary>
+    /// Audio input system.
+    /// </summary>
+    public class AudioInputSystem : IDisposable
+    {
+        /// <summary>
+        /// The session id associated to the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        private int _sessionId;
+
+        /// <summary>
+        /// The session the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        private AudioDeviceSession _session;
+
+        /// <summary>
+        /// The target device name of the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        public string DeviceName { get; private set; }
+
+        /// <summary>
+        /// The target sample rate of the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        public uint SampleRate { get; private set; }
+
+        /// <summary>
+        /// The target channel count of the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        public uint ChannelCount { get; private set; }
+
+        /// <summary>
+        /// The target sample format of the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        public SampleFormat SampleFormat { get; private set; }
+
+        /// <summary>
+        /// The <see cref="AudioInputManager"/> owning this.
+        /// </summary>
+        private AudioInputManager _manager;
+
+        /// <summary>
+        /// The lock of the parent.
+        /// </summary>
+        private object _parentLock;
+
+        /// <summary>
+        /// The dispose state.
+        /// </summary>
+        private int _disposeState;
+
+        /// <summary>
+        /// Create a new <see cref="AudioInputSystem"/>.
+        /// </summary>
+        /// <param name="manager">The manager instance</param>
+        /// <param name="parentLock">The lock of the manager</param>
+        /// <param name="deviceSession">The hardware device session</param>
+        /// <param name="bufferEvent">The buffer release event of the audio input</param>
+        public AudioInputSystem(AudioInputManager manager, object parentLock, IHardwareDeviceSession deviceSession, IWritableEvent bufferEvent)
+        {
+            _manager = manager;
+            _parentLock = parentLock;
+            _session = new AudioDeviceSession(deviceSession, bufferEvent);
+        }
+
+        /// <summary>
+        /// Get the default device name on the system.
+        /// </summary>
+        /// <returns>The default device name on the system.</returns>
+        private static string GetDeviceDefaultName()
+        {
+            return Constants.DefaultDeviceInputName;
+        }
+
+        /// <summary>
+        /// Check if a given configuration and device name is valid on the system.
+        /// </summary>
+        /// <param name="configuration">The configuration to check.</param>
+        /// <param name="deviceName">The device name to check.</param>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
+        private static ResultCode IsConfigurationValid(ref AudioInputConfiguration configuration, string deviceName)
+        {
+            if (deviceName.Length != 0 && !deviceName.Equals(GetDeviceDefaultName()))
+            {
+                return ResultCode.DeviceNotFound;
+            }
+            else if (configuration.SampleRate != 0 && configuration.SampleRate != Constants.TargetSampleRate)
+            {
+                return ResultCode.UnsupportedSampleRate;
+            }
+            else if (configuration.ChannelCount != 0 && configuration.ChannelCount != 1 && configuration.ChannelCount != 2 && configuration.ChannelCount != 6)
+            {
+                return ResultCode.UnsupportedChannelConfiguration;
+            }
+
+            return ResultCode.Success;
+        }
+
+        /// <summary>
+        /// Get the released buffer event.
+        /// </summary>
+        /// <returns>The released buffer event</returns>
+        public IWritableEvent RegisterBufferEvent()
+        {
+            lock (_parentLock)
+            {
+                return _session.GetBufferEvent();
+            }
+        }
+
+        /// <summary>
+        /// Update the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        public void Update()
+        {
+            lock (_parentLock)
+            {
+                _session.Update();
+            }
+        }
+
+        /// <summary>
+        /// Get the id of this session.
+        /// </summary>
+        /// <returns>The id of this session</returns>
+        public int GetSessionId()
+        {
+            return _sessionId;
+        }
+
+        /// <summary>
+        /// Initialize the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        /// <param name="inputDeviceName">The input device name wanted by the user</param>
+        /// <param name="sampleFormat">The sample format to use</param>
+        /// <param name="parameter">The user configuration</param>
+        /// <param name="sessionId">The session id associated to this <see cref="AudioInputSystem"/></param>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
+        public ResultCode Initialize(string inputDeviceName, SampleFormat sampleFormat, ref AudioInputConfiguration parameter, int sessionId)
+        {
+            _sessionId = sessionId;
+
+            ResultCode result = IsConfigurationValid(ref parameter, inputDeviceName);
+
+            if (result == ResultCode.Success)
+            {
+                if (inputDeviceName.Length == 0)
+                {
+                    DeviceName = GetDeviceDefaultName();
+                }
+                else
+                {
+                    DeviceName = inputDeviceName;
+                }
+
+                if (parameter.ChannelCount == 6)
+                {
+                    ChannelCount = 6;
+                }
+                else
+                {
+                    ChannelCount = 2;
+                }
+
+                SampleFormat = sampleFormat;
+                SampleRate = Constants.TargetSampleRate;
+            }
+
+            return result;
+        }
+
+        /// <summary>
+        /// Append a new audio buffer to the audio input.
+        /// </summary>
+        /// <param name="bufferTag">The unique tag of this buffer.</param>
+        /// <param name="userBuffer">The buffer informations.</param>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
+        public ResultCode AppendBuffer(ulong bufferTag, ref AudioUserBuffer userBuffer)
+        {
+            lock (_parentLock)
+            {
+                AudioBuffer buffer = new AudioBuffer
+                {
+                    BufferTag = bufferTag,
+                    DataPointer = userBuffer.Data,
+                    DataSize = userBuffer.DataSize
+                };
+
+                if (_session.AppendBuffer(buffer))
+                {
+                    return ResultCode.Success;
+                }
+
+                return ResultCode.BufferRingFull;
+            }
+        }
+
+        /// <summary>
+        /// Append a new audio buffer to the audio input.
+        /// </summary>
+        /// <remarks>This is broken by design, only added for completness.</remarks>
+        /// <param name="bufferTag">The unique tag of this buffer.</param>
+        /// <param name="userBuffer">The buffer informations.</param>
+        /// <param name="handle">Some unknown handle.</param>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
+        public ResultCode AppendUacBuffer(ulong bufferTag, ref AudioUserBuffer userBuffer, uint handle)
+        {
+            lock (_parentLock)
+            {
+                AudioBuffer buffer = new AudioBuffer
+                {
+                    BufferTag = bufferTag,
+                    DataPointer = userBuffer.Data,
+                    DataSize = userBuffer.DataSize
+                };
+
+                if (_session.AppendUacBuffer(buffer, handle))
+                {
+                    return ResultCode.Success;
+                }
+
+                return ResultCode.BufferRingFull;
+            }
+        }
+
+        /// <summary>
+        /// Get the release buffers.
+        /// </summary>
+        /// <param name="releasedBuffers">The buffer to write the release buffers</param>
+        /// <param name="releasedCount">The count of released buffers</param>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
+        public ResultCode GetReleasedBuffers(Span<ulong> releasedBuffers, out uint releasedCount)
+        {
+            releasedCount = 0;
+
+            // Ensure that the first entry is set to zero if no entries are returned.
+            if (releasedBuffers.Length > 0)
+            {
+                releasedBuffers[0] = 0;
+            }
+
+            lock (_parentLock)
+            {
+                for (int i = 0; i < releasedBuffers.Length; i++)
+                {
+                    if (!_session.TryPopReleasedBuffer(out AudioBuffer buffer))
+                    {
+                        break;
+                    }
+
+                    releasedBuffers[i] = buffer.BufferTag;
+                    releasedCount++;
+                }
+            }
+
+            return ResultCode.Success;
+        }
+
+        /// <summary>
+        /// Get the current state of the <see cref="AudioInputSystem"/>.
+        /// </summary>
+        /// <returns>Return the curent sta\te of the <see cref="AudioInputSystem"/></returns>
+        public AudioDeviceState GetState()
+        {
+            lock (_parentLock)
+            {
+                return _session.GetState();
+            }
+        }
+
+        /// <summary>
+        /// Start the audio session.
+        /// </summary>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success</returns>
+        public ResultCode Start()
+        {
+            lock (_parentLock)
+            {
+                return _session.Start();
+            }
+        }
+
+        /// <summary>
+        /// Stop the audio session.
+        /// </summary>
+        /// <returns>A <see cref="ResultCode"/> reporting an error or a success</returns>
+        public ResultCode Stop()
+        {
+            lock (_parentLock)
+            {
+                return _session.Stop();
+            }
+        }
+
+        /// <summary>
+        /// Get the volume of the session.
+        /// </summary>
+        /// <returns>The volume of the session</returns>
+        public float GetVolume()
+        {
+            lock (_parentLock)
+            {
+                return _session.GetVolume();
+            }
+        }
+
+        /// <summary>
+        /// Set the volume of the session.
+        /// </summary>
+        /// <param name="volume">The new volume to set</param>
+        public void SetVolume(float volume)
+        {
+            lock (_parentLock)
+            {
+                _session.SetVolume(volume);
+            }
+        }
+
+        /// <summary>
+        /// Get the count of buffer currently in use (server + driver side).
+        /// </summary>
+        /// <returns>The count of buffer currently in use</returns>
+        public uint GetBufferCount()
+        {
+            lock (_parentLock)
+            {
+                return _session.GetBufferCount();
+            }
+        }
+
+        /// <summary>
+        /// Check if a buffer is present.
+        /// </summary>
+        /// <param name="bufferTag">The unique tag of the buffer</param>
+        /// <returns>Return true if a buffer is present</returns>
+        public bool ContainsBuffer(ulong bufferTag)
+        {
+            lock (_parentLock)
+            {
+                return _session.ContainsBuffer(bufferTag);
+            }
+        }
+
+        /// <summary>
+        /// Get the count of sample played in this session.
+        /// </summary>
+        /// <returns>The count of sample played in this session</returns>
+        public ulong GetPlayedSampleCount()
+        {
+            lock (_parentLock)
+            {
+                return _session.GetPlayedSampleCount();
+            }
+        }
+
+        /// <summary>
+        /// Flush all buffers to the initial state.
+        /// </summary>
+        /// <returns>True if any buffers was flushed</returns>
+        public bool FlushBuffers()
+        {
+            lock (_parentLock)
+            {
+                return _session.FlushBuffers();
+            }
+        }
+
+        public void Dispose()
+        {
+            if (Interlocked.CompareExchange(ref _disposeState, 1, 0) == 0)
+            {
+                Dispose(true);
+            }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _session.Dispose();
+
+                _manager.Unregister(this);
+            }
+        }
+    }
+}
+\ No newline at end of file